diff --git a/src/ordering/adapters/output/db/order_id_exists.rs b/src/ordering/adapters/output/db/order_id_exists.rs
new file mode 100644
index 0000000..9510030
--- /dev/null
+++ b/src/ordering/adapters/output/db/order_id_exists.rs
@@ -0,0 +1,89 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use uuid::Uuid;
+
+use super::OrderingDBPostgresAdapter;
+use crate::ordering::application::port::output::db::{errors::*, order_id_exists::*};
+
+#[async_trait::async_trait]
+impl OrderIDExistsDBPort for OrderingDBPostgresAdapter {
+    async fn order_id_exists(&self, order_id: &Uuid) -> OrderingDBResult<bool> {
+        let res = sqlx::query!(
+            "SELECT EXISTS (
+                SELECT 1
+                    FROM cqrs_ordering_order_query
+                WHERE
+                    order_id = $1
+            );",
+            order_id
+        )
+        .fetch_one(&self.pool)
+        .await?;
+        if let Some(x) = res.exists {
+            Ok(x)
+        } else {
+            Ok(false)
+        }
+    }
+}
+
+#[cfg(test)]
+pub mod tests {
+
+    use super::*;
+    //    use crate::ordering::domain::add_order_command::tests::get_customizations;
+    use crate::ordering::domain::order_aggregate::*;
+
+    async fn create_dummy_order(order: &Order, db: &OrderingDBPostgresAdapter) {
+        sqlx::query!(
+            "INSERT INTO cqrs_ordering_order_query (
+                    version,
+                    order_id,
+                    customer_name,
+                    created_time,
+                    deleted
+                ) VALUES (
+                    $1, $2, $3, $4, $5
+                );",
+            1,
+            order.order_id(),
+            order.customer_name(),
+            order.created_time(),
+            order.deleted().clone(),
+        )
+        .execute(&db.pool)
+        .await
+        .unwrap();
+    }
+
+    #[actix_rt::test]
+    async fn test_postgres_order_exists() {
+        let settings = crate::settings::tests::get_settings().await;
+        settings.create_db().await;
+        let db = super::OrderingDBPostgresAdapter::new(
+            sqlx::postgres::PgPool::connect(&settings.database.url)
+                .await
+                .unwrap(),
+        );
+
+        let order = Order::default();
+
+        // state doesn't exist
+        assert!(!db
+            .order_id_exists(order.order_id())
+            .await
+            .unwrap());
+
+        create_dummy_order(&order, &db).await;
+
+        // state exists
+        assert!(db
+            .order_id_exists(order.order_id())
+            .await
+            .unwrap());
+
+        settings.drop_db().await;
+    }
+}
diff --git a/src/ordering/application/port/output/db/errors.rs b/src/ordering/application/port/output/db/errors.rs
index db03945..b383b4c 100644
--- a/src/ordering/application/port/output/db/errors.rs
+++ b/src/ordering/application/port/output/db/errors.rs
@@ -12,4 +12,7 @@ pub enum OrderingDBError {
     DuplicateLineItemID,
     LineItemIDNotFound,
     InternalError,
+    DuplicateOrderID,
+    OrderIDNotFound,
+
 }
diff --git a/src/ordering/application/port/output/db/mod.rs b/src/ordering/application/port/output/db/mod.rs
index 7c397a6..2db807b 100644
--- a/src/ordering/application/port/output/db/mod.rs
+++ b/src/ordering/application/port/output/db/mod.rs
@@ -4,3 +4,4 @@
 
 pub mod errors;
 pub mod line_item_id_exists;
+pub mod order_id_exists;
diff --git a/src/ordering/application/port/output/db/order_id_exists.rs b/src/ordering/application/port/output/db/order_id_exists.rs
new file mode 100644
index 0000000..97e7951
--- /dev/null
+++ b/src/ordering/application/port/output/db/order_id_exists.rs
@@ -0,0 +1,57 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use mockall::predicate::*;
+use mockall::*;
+use uuid::Uuid;
+
+use super::errors::*;
+#[cfg(test)]
+#[allow(unused_imports)]
+pub use tests::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait OrderIDExistsDBPort: Send + Sync {
+    async fn order_id_exists(&self, order_id: &Uuid) -> OrderingDBResult<bool>;
+}
+
+pub type OrderIDExistsDBPortObj = std::sync::Arc<dyn OrderIDExistsDBPort>;
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use std::sync::Arc;
+
+    pub fn mock_order_id_exists_db_port_false(
+        times: Option<usize>,
+    ) -> OrderIDExistsDBPortObj {
+        let mut m = MockOrderIDExistsDBPort::new();
+        if let Some(times) = times {
+            m.expect_order_id_exists()
+                .times(times)
+                .returning(|_| Ok(false));
+        } else {
+            m.expect_order_id_exists().returning(|_| Ok(false));
+        }
+
+        Arc::new(m)
+    }
+
+    pub fn mock_order_id_exists_db_port_true(
+        times: Option<usize>,
+    ) -> OrderIDExistsDBPortObj {
+        let mut m = MockOrderIDExistsDBPort::new();
+        if let Some(times) = times {
+            m.expect_order_id_exists()
+                .times(times)
+                .returning(|_| Ok(true));
+        } else {
+            m.expect_order_id_exists().returning(|_| Ok(true));
+        }
+
+        Arc::new(m)
+    }
+}